The Mediterranean Messinian Salinity Crisis, Hsu et al. (1973) has two main expressions, 1/ very deep subaerial canyons incision on the the hinterland and along basin margins, 2/ deposition of marginal and abyssal evaporites in the basins. Boths are well known everywhere around Mediterranean Sea, but surprisingly the occurence of canyons is poorly documented along North African margin except in Egypt where the Nile canyon is well known from onshore, to offshore, since a long time, Chumakov (1973), Barber (1981), Dalla et al. (1997). More recently messinian canyons have been reported:

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